ADL5601 Data Sheet
Rev. A | Page 12 of 16
BASIC CONNECTIONS
The basic connections for operating the ADL5601 are shown in
Figure 16. Recommended components are listed in Table 5. The
input and output should be ac-coupled with appropriately sized
capacitors (the device characterization was performed with
0.1 μF capacitors). A 5 V dc bias is supplied to the amplifier
through the bias inductor connected to RFOUT (Pin 3). The
bias voltage should be decoupled using a 1 µF capacitor, a 1.2 nF
capacitor, and a 68 pF capacitor.
C6
1µF
C5
1.2nF
C4
68pF
VCC
RFOUT
RFIN
RFIN
GND
GND
RFOUT
1
2 3
GND
ADL5601
(2)
C2
0.1µF
L1
470nH
C1
0.1µF
08219-015
Figure 16. Basic Connections
SOLDERING INFORMATION AND RECOMMENDED
PCB LAND PATTERN
Figure 17 shows the recommended land pattern for the ADL5601.
To minimize thermal impedance, the exposed paddle on the
package underside, along with Pin 2, should be soldered to a
ground plane. If multiple ground layers exist, they should be
stitched together using vias. For more information on land
pattern design and layout, refer to the AN-772 Application
Note, A Design and Manufacturing Guide for the Lead Frame
Chip Scale Package (LFCSP).
1.50mm
3.00mm
1.27mm
0.62mm
3.48mm
1.80mm
0.86mm
5.37mm
0.20mm
0.762mm 0.635mm
0.86mm
08219-101
Figure 17. Recommended Land Pattern
Table 5. Recommended Components for Basic Connections
Frequency C1 C2 L1 C4 C5 C6
50 MHz to 4000 MHz 0.1 µF 0.1 µF 470 nH (Coilcraft 0603LS-NX or equivalent) 68 pF 1.2 nF 1 µF
Data Sheet ADL5601
Rev. A | Page 13 of 16
W-CDMA ACPR PERFORMANCE
Figure 18 shows a plot of the adjacent channel power ratio
(ACPR) vs. P
OUT
for the ADL5601. The signal type used is a
single wideband code division multiple access (W-CDMA)
carrier (Test Model 1, 64) at 2140 MHz. This signal is generated
by a very low ACPR source. ACPR is measured at the output by
a high dynamic range spectrum analyzer that incorporates an
instrument noise-correction function.
The ADL5601 achieves an ACPR of −69 dBc at −5 dBm output,
at which point device noise, rather than distortion, begins to
dominate the power in the adjacent channels. At an output
power of +5 dBm, ACPR is still very low at −56 dBc, making
the device particularly suitable for power amplifier (PA) driver
applications.
08219-024
–75
–70
–65
–60
–55
–50
–45
–40
–20
–15
–10
–5
0
5 10
ACPR AT 5MHz CARRIER OFFSET (dBc)
P
OUT
(dBm)
Figure 18. ACPR vs. P
OUT
, Single W-CDMA Carrier (Test Model 1, 64)
at 2140 MHz
ADL5601 Data Sheet
Rev. A | Page 14 of 16
EVALUATION BOARD
Figure 19 shows the evaluation board layout, and Figure 20
shows the schematic for the ADL5601 evaluation board. The
board is powered by a single 5 V supply.
The components used on the board are listed in Table 6.
Power can be applied to the board through clip-on leads
(VCC and GND).
08219-018
Figure 19. Evaluation Board Layout (Top)
C6
1µF
C5
1.2nF
C4
68pF
VCC
RFOUT
RFIN
RFIN
GND
GND
RFOUT
1
2
3
ADL5601
(2)
C2
0.1µF
L1
470nH
C1
0.1µF
08219-019
GND
Figure 20. Evaluation Board Schematic
Table 6. Evaluation Board Configuration Options
Component Description Default Value
C1, C2 AC coupling capacitors 0.1 μF, 0402
L1 DC bias inductor 470 nH, 0603 (Coilcraft 0603LS-NX or equivalent)
VCC and GND Clip-on terminals for power supply
C4 Power supply decoupling capacitor 68 pF, 0603
C5 Power supply decoupling capacitor 1.2 nF, 0603
C6 Power supply decoupling capacitor 1 μF, 1206

ADL5601-EVALZ

Mfr. #:
Manufacturer:
Analog Devices Inc.
Description:
ADL5601 RF Amplifier Chip Evaluation Board
Lifecycle:
New from this manufacturer.
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